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1/* SPDX-License-Identifier: GPL-2.0-or-later */2#ifndef __SOUND_SOUNDFONT_H3#define __SOUND_SOUNDFONT_H4 5/*6 * Soundfont defines and definitions.7 *8 * Copyright (C) 1999 Steve Ratcliffe9 * Copyright (c) 1999-2000 Takashi iwai <tiwai@suse.de>10 */11 12#include <sound/sfnt_info.h>13#include <sound/util_mem.h>14 15#define SF_MAX_INSTRUMENTS 128 /* maximum instrument number */16#define SF_MAX_PRESETS 256 /* drums are mapped from 128 to 256 */17#define SF_IS_DRUM_BANK(z) ((z) == 128)18 19struct snd_sf_zone {20 struct snd_sf_zone *next; /* Link to next */21 unsigned char bank; /* Midi bank for this zone */22 unsigned char instr; /* Midi program for this zone */23 unsigned char mapped; /* True if mapped to something else */24 25 struct soundfont_voice_info v; /* All the soundfont parameters */26 int counter;27 struct snd_sf_sample *sample; /* Link to sample */28 29 /* The following deals with preset numbers (programs) */30 struct snd_sf_zone *next_instr; /* Next zone of this instrument */31 struct snd_sf_zone *next_zone; /* Next zone in play list */32};33 34struct snd_sf_sample {35 struct soundfont_sample_info v;36 int counter;37 struct snd_util_memblk *block; /* allocated data block */38 struct snd_sf_sample *next;39};40 41/*42 * This represents all the information relating to a soundfont.43 */44struct snd_soundfont {45 struct snd_soundfont *next; /* Link to next */46 /*struct snd_soundfont *prev;*/ /* Link to previous */47 short id; /* file id */48 short type; /* font type */49 unsigned char name[SNDRV_SFNT_PATCH_NAME_LEN]; /* identifier */50 struct snd_sf_zone *zones; /* Font information */51 struct snd_sf_sample *samples; /* The sample headers */52};53 54/*55 * Type of the sample access callback56 */57struct snd_sf_callback {58 void *private_data;59 int (*sample_new)(void *private_data, struct snd_sf_sample *sp,60 struct snd_util_memhdr *hdr,61 const void __user *buf, long count);62 int (*sample_free)(void *private_data, struct snd_sf_sample *sp,63 struct snd_util_memhdr *hdr);64 void (*sample_reset)(void *private);65};66 67/*68 * List of soundfonts.69 */70struct snd_sf_list {71 struct snd_soundfont *currsf; /* The currently open soundfont */72 int open_client; /* client pointer for lock */73 int mem_used; /* used memory size */74 struct snd_sf_zone *presets[SF_MAX_PRESETS];75 struct snd_soundfont *fonts; /* The list of soundfonts */76 int fonts_size; /* number of fonts allocated */77 int zone_counter; /* last allocated time for zone */78 int sample_counter; /* last allocated time for sample */79 int zone_locked; /* locked time for zone */80 int sample_locked; /* locked time for sample */81 struct snd_sf_callback callback; /* callback functions */82 int presets_locked;83 struct mutex presets_mutex;84 spinlock_t lock;85 struct snd_util_memhdr *memhdr;86};87 88/* Prototypes for soundfont.c */89int snd_soundfont_load(struct snd_card *card,90 struct snd_sf_list *sflist, const void __user *data,91 long count, int client);92int snd_soundfont_load_guspatch(struct snd_card *card,93 struct snd_sf_list *sflist, const char __user *data,94 long count);95int snd_soundfont_close_check(struct snd_sf_list *sflist, int client);96 97struct snd_sf_list *snd_sf_new(struct snd_sf_callback *callback,98 struct snd_util_memhdr *hdr);99void snd_sf_free(struct snd_sf_list *sflist);100 101int snd_soundfont_remove_samples(struct snd_sf_list *sflist);102int snd_soundfont_remove_unlocked(struct snd_sf_list *sflist);103 104int snd_soundfont_search_zone(struct snd_sf_list *sflist, int *notep, int vel,105 int preset, int bank,106 int def_preset, int def_bank,107 struct snd_sf_zone **table, int max_layers);108 109/* Parameter conversions */110int snd_sf_calc_parm_hold(int msec);111int snd_sf_calc_parm_attack(int msec);112int snd_sf_calc_parm_decay(int msec);113#define snd_sf_calc_parm_delay(msec) (0x8000 - (msec) * 1000 / 725)114extern int snd_sf_vol_table[128];115int snd_sf_linear_to_log(unsigned int amount, int offset, int ratio);116 117 118#endif /* __SOUND_SOUNDFONT_H */119